Preventing Alzheimer’s Disease: A study published May 2016 in the journal Translational Medicine by researchers at Harvard University theorized that the brain’s natural defense for fighting off viruses, fungi or bacteria could be the cause of the amyloid plaque that damages the brain over many decades. It could even provide new insights into the root microbial causes of more serious diseases such as Alzheimer’s. It might therefore be prudent to ingest our daily requirement of colloidal silver (0.5 mg) to ensure that no microbes can survive and proliferate in brain tissue.